Home / 12,380.60-18,570.94-3,146.60

Finding the Fourth Proportional to 12,380.60, 18,570.94 and 3,146.60

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Solution

The fourth proportional to 12,380.60, 18,570.94 and 3,146.60 is: 4,719.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,380.60 : 18,570.94 = 3,146.60 : x
  2. Step 2: Convert to fraction form
    12,380.60/18,570.94 = 3,146.60/x
  3. Step 3: Cross multiply
    12,380.60x = 18,570.94 × 3,146.60
  4. Step 4: Simplify right side
    12,380.60x = 58,435,319.80
  5. Step 5: Solve for x
    x = 58,435,319.80/12,380.60
  6. Step 6: Final answer
    x = 4,719.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.